Air Quality Index (AQI) | AirNow.gov
Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and how to avoid those effects.
AirNow.gov
AirNow is your one-stop source for air quality data. Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views.
National Maps | AirNow.gov
The list below shows the areas with the highest NowCast AQI for the current hour. The AirNow system automatically generates this list every hour, based on the areas with the highest NowCast AQI for ozone or particle pollution. Because air quality can change during the day, the areas on this list may change throughout the day, too.
Recent AQI Trends | AirNow.gov
This new version features an updated display that allows you to get a quick glance at information, tailored user interfaces for both desktop and mobile, and faster loading. Learn more about the Fire and Smoke Map. Get Current and Forecast Air Quality for Your Area.
AQI Basics | AirNow.gov
The U.S. Air Quality Index (AQI) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index values. The higher the AQI value, the greater the level of …
AQI & Health | AirNow.gov
Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and how to avoid those effects.
State AQI | AirNow.gov
Wildfire smoke continues to impact air quality in multiple states. Please use the Fire and Smoke map to check on wildfire smoke impacts in your area.
System Alerts | AirNow.gov
Nov 14, 2023 · Wildfire smoke continues to impact air quality in multiple states. Please use the Fire and Smoke map to check on wildfire smoke impacts in your area. AirNow.gov - Home of the U.S. Air Quality Index
Using the Air Quality Index - AirNow
What it is: The U.S. Air Quality Index, or AQI, is EPA’s tool for communicating daily air quality. It uses color-coded categories and provides statements for each category that tell you about air quality in your area, which groups of people may be affected, and steps you can take to reduce your exposure to air pollution.
AQI Calculator | AirNow.gov
AQI to Concentration Calculator. DIRECTIONS: Select a pollutant, then enter the AQI value. Click on “Calculate” to see the results.